(1) Make students pay attention to the environment around realize the problems caused by human activity.
(2) Encourage and help students to think of the solutions to solving the problems
(3) Practice their speaking ability by discussing in groups
What is your picture of earth in your mind?
What are the environmental problems in your living surroundings?
Do you think a healthy environment is important four human beings? Why?
Step 2 Discussion
Ask them to have a discussion.
Which ones are caused by nature and which ones are caused by man?
What can people do to solve these environmental problems?